Which pair shows the correct chemical symbol and gas?
Answer and explanation
Correct answer: N₂ — nitrogen
N₂ is the molecular formula for nitrogen gas: one molecule contains two nitrogen atoms. Nitrogen is also the most abundant major gas in Earth’s atmosphere. Option A is not the intended correct pair because O₃ represents ozone, not ordinary oxygen, while CO₂ represents carbon dioxide and Ar is the symbol for argon. The governing idea is that chemical symbols and subscripts identify the element and the number of atoms in a molecule.
Frequently asked questions
What is the correct answer to this question?
N₂ — nitrogen
Why is this the correct answer?
N₂ is the molecular formula for nitrogen gas: one molecule contains two nitrogen atoms. Nitrogen is also the most abundant major gas in Earth’s atmosphere. Option A is not the intended correct pair because O₃ represents ozone, not ordinary oxygen, while CO₂ represents carbon dioxide and Ar is the symbol for argon. The governing idea is that chemical symbols and subscripts identify the element and the number of atoms in a molecule.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
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